HSC 2002 - Biology
Exemplar Sample
Marks
Question 28 — Communication (25 marks)
(a)
(b)
(i)
Outline the function of the organ of Corti in hearing.
1
(ii)
State the relationship between wavelength, frequency and pitch of a
sound.
2
(iii)
Compare TWO structures used by animals to produce sound.
2
During a first-hand investigation, a student acquired three photographs
of cross-sections of the human brain. The student then lost the labels and
mixed up the photographs.
3
(i)
What structural features of the cerebrum, cerebellum and medulla
oblongata could the student use to identify each photograph correctly?
(ii)
(c)
(d)
Draw a sketch of the brain and clearly label those regions involved in
speech.
3
The data in the table gives the focal length of six lenses which have the same
diameter but different thickness.
Thickness of lens (mm)
Focal length (cm)
10
12.5
9
14.0
8
15.5
7
18.0
6
21.0
5
25.0
(i)
Graph the data on the graph paper provided on page 33.
4
(ii)
State the relationship between lens thickness and focal length.
1
(iii)
Refer to the information above in explaining how human eyes can focus
on objects at different distances.
2
The light signal reaching the retina is transformed into electrochemical signals.
7
Describe the different structures and processes in the retina that can achieve the
energy transformation described above.
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HSC 2002 - Biology
Exemplar Sample
Question 28
HSC 2002 - Biology
Exemplar Sample
HSC 2002 - Biology
Exemplar Sample
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HSC 2002 - Biology
Exemplar Sample
HSC 2002 - Biology
Exemplar Sample
HSC 2002 - Biology
Exemplar Sample